Tak naprwde poterzebne na dzis 07.09.2011
zadania w zalacznikach.
bardzo prosze o rozwiazanie zadan zaznaczonych w koleczkach. zadanie na juz. bardzo prosze o poprawne rozwiazanie
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1.
b)
(6/11 -15/45):(11/3 -2 1,2) = (6/11 -1/3):(11/3 -5/2) =
= (18/33 -11/33):(22/7 -15/6) = 7/33:7/6 = 7/33 * 6/33 = 6/33 = 2/11
c)
2 -(8-1/2):(12+1/2) = 2 - 7 1/2:12 1/2 = 2 -15/2:25/2 = 2 -15/2 * 2/25 =
= 2 -3/5 = 1 2/5
2.
a)
(2/3 +1/5):(5/7 -1/2) + (3 2/17 - 4 6/13)*(0,75 -3/4) =
=(10/15 +3/15):(10/14 -7/14) + (3 2/17 - 4 6/13)(3/4 -3/4) =
=13/15:3/14 + (3 2/17 - 4 6/13) * 0 =
= 13/15 *14/15 = 182/45 = 4 2/45